Know your numbers. Then dose them.
A sweat test gives you the two figures that make a hydration plan yours instead of an average — your sweat rate and your sweat sodium concentration. Below are places to get tested across Australia. No lab near you? Start free with the calculator.
Two numbers decide your sodium need.
Sodium loss per hour = sweat rate × sweat sodium concentration. Both vary widely between athletes, which is why generic advice under-serves the heavy, salty sweater and over-waters the light one. A test pins down your figures so your plan is built on your physiology.
You don't need a test to start — the calculator estimates both from your profile. A test just makes the plan sharper. Either way, the result feeds the same place.
The science behind the two variablesKnow which test you're getting.
Two methods are common in Australia. They measure overlapping but different things — worth knowing so you book the right one.
Whichever you choose, the number you walk out with is yours — bring it back here to turn it into a plan.
Pilocarpine forearm test
No exercise. A small forearm patch is stimulated to sweat and analysed for sodium concentration (mg/L). ~45 minutes. The number is stable, so you only need it once.
Session / patch test
You train while patches collect sweat, with a pre/post weigh-in. Captures sweat rate (L/hr) as well as sodium, under real conditions.
Start with the calculator
Not ready to pay, or no lab nearby? A weigh-in gives your sweat rate for free, and the Lytework calculator estimates both from your profile in two minutes.
Sweat testing across Australia.
Grouped by state, with the test method on each. Details were correct at build — confirm when you book.
Athletic Institute
Wangara · Perth
Sweat sodium measured at rest, plus an optional sweat-rate session on the bike or treadmill. Full report and a personalised hydration plan.
The Sweat Lab
Cheltenham · also national network
Complete Sweat Profile (from $199) run by exercise scientist Andy Garlick. Measures rate and sodium, with accredited testers across the country who send samples back for analysis.
Sweat Testing Victoria
Kieser South Melbourne · Leopold (Geelong)
Exercise-free forearm test for sweat sodium with physiotherapist Reece Noble, inside a full ~45–60 min consultation. Sweat rate is set up via weigh-in, then built into a tailored plan.
METS Performance
Mulgrave · Melbourne
Sport-science consultancy measuring sweat rate and sodium loss to estimate your hydration needs. Can also travel for group testing across Victoria.
Pro4mance
Melbourne · group testing statewide
Patch-based session at race pace with a pre/post weigh-in, returning sodium loss (mg/hr), concentration (mg/L), sweat rate and body-weight loss. Run as groups (min. 5). Also ships a mail-in kit — see below.
Level Up Tri Coaching
Sydney
Medical-grade, exercise-free sweat collection for sodium concentration, analysed on the spot and built into an individualised hydration plan. Sweat rate worked through with you.
Inspire Athletic
Brisbane
A dedicated test centre. At-rest forearm test for sweat sodium concentration, walked through with a hydration strategy for your racing.
Dietitian Approved
Brisbane
One-on-one with an Advanced Sports Dietitian. Sweat rate, fluid intake and electrolyte concentration measured in a real session, with a detailed report.
Tamar Performance Centre
Launceston
Sweat testing built into a tailored hydration plan for your event, distance and intensity. A 2:1 option lets you test alongside a training partner.
Pro4mance — mail-in kit
Posted Australia-wide
A kit posted to you. Run a 30–60 min test at race pace, weigh in, post the patches back, and they analyse and return your sodium, sweat rate and body-weight loss with a hydration report.
hDrop
Reusable sensor
A reusable wearable that reads sweat rate and sodium loss in real time, across sessions and conditions — repeatable testing without booking a lab.
This isn't every provider in Australia — many sports-medicine clinics and dietitians offer testing without ranking online. Know one we've missed? Tell us at hello@lyteworklabs.com and we'll verify and add it. We list providers independently — being here isn't a paid placement or an endorsement.
Bring it back to the calculator.
A test result is only useful once it's a plan. Drop your figures into the Lytework calculator and it turns them into a per-hour fluid, sodium and capsule strategy for your session and conditions.
What to bring back
- Sweat sodium concentration (mg/L) — from an at-rest or patch test
- Sweat rate (L/hr) — from a session test, or a free weigh-in
- No numbers yet? The calculator estimates both from your profile
A sweat test is a strong input, not the whole picture. Heat, pacing and fuelling all shape how a session goes. Treat your numbers as the backbone of a strategy, not the strategy itself.
Control sodium. Not your drink.
Tested or not, build your hydration profile in two minutes — a personalised fluid, sodium and capsule strategy for your physiology and conditions. Free, no account needed.